Tutoring a four year old senior casa kid

Mom's cutting on expenses so she thought maybe she can give up my sister's tutor with Php3000 monthly salary and hire me instead for half the price. Since it would be extra income for me, I grabbed the deal without even thinking how the hell am dealing with this little me.

It has been a week now since I started tutoring the kiddo and I've already realized a lot of things. That (first), giving 3k monthly to her tutor is just right and humane. That (second), Php1500 monthly is not enough to extend my patience to the highest possible level. That (third), I can hit my own sisters hand with a pencil. And (fourth), pre-school teachers are gods.

After 5 days of teaching my sister, I still don't know the most effective method for her. I still have no idea how to make the learning more fun and effective. I'm still in the "trial and error" stage wherein I test whether which method would make her more interested in the topic we have to study, how I can make her stay on her chair for a few more minutes and how I can make her focus on what i'm trying to impart to her and stop her eyes from wondering around the room. 

Teaching a pre-schooler is difficult. A challenge. But I think I'm enjoying it (for now. lol), and yes I am definitely taking the challenge!